Sensitive Teeth from Gum Recession: Why Gums Recede and How to Stop It

When the gums recede, the root surface, which is not covered by enamel, is exposed, and teeth become sensitive to cold water or brushing. The Korea Disease Control and Prevention Agency (KDCA) explains that sensitivity is not a direct symptom of gum disease but can arise as gum disease makes the gums recede, so if gum bleeding or swelling is also present, gum treatment comes first. Gums that have receded and gum bone that has dissolved are hard to restore, so care that prevents further recession is the center of treatment.

Published 2026-11-08 · Updated 2026-11-08 · DentalStatics editorial team

Key facts

Relationship between sensitivity and gum disease	Tooth sensitivity is not a symptom of periodontal disease, but it can arise when periodontal disease makes the gums recede (source: Korea Disease Control and Prevention Agency (KDCA) National Health Information Portal)
Signs of gum recession	The gums recede so the teeth look longer, and food easily gets caught between the teeth (source: KDCA National Health Information Portal)
Periodontal disease prevalence in the 60s	55.2% in men and 39.5% in women (2018 Korea National Health and Nutrition Examination Survey) (source: KDCA National Health Information Portal)
Limits of gum grafting	The outcome of gingival grafting, which covers the exposed root with gum tissue, is hard to predict (source: KDCA National Health Information Portal)
Maintenance after treatment	After periodontal treatment, regular maintenance at 3 to 6 month intervals is needed (source: KDCA National Health Information Portal)

Why do teeth become sensitive when the gums recede?

The crown of a tooth is covered with thick enamel, but the root surface that is normally covered by gum has only a thin layer of cementum. When the gums recede and this part is exposed in the mouth, the cementum wears away easily and the dentin below passes cold stimuli straight to the nerve.

The KDCA material introduces a report that 60 to 98% of people with periodontal disease also have dentin hypersensitivity. Sensitivity caused by gum recession usually appears broadly along the gum line of several teeth, and it can hurt not only with cold water but also when the toothbrush bristles touch the exposed root.

The root surface is softer than the crown, so once exposed, it wears more easily from brushing or acidic food. This is why gum recession and wear at the tooth neck often progress together in the same spot, and in that case the sensitivity tends to become wider and deeper.

Why do gums recede?

The most common cause is gum disease caused by plaque and tartar. When inflammation spreads to the bone beneath the gums, the bone shrinks, and the gums recede along with the bone. In the 2018 Korea National Health and Nutrition Examination Survey, the prevalence of periodontal disease rose sharply after the 50s, at 55.2% for men and 39.5% for women in their 60s.

Besides gum disease, there are several other factors that make gums recede, and usually several act together.

Hard sideways scrubbing and hard bristles
Gum recession that comes with age
Smoking (a risk factor that worsens the prognosis of gum disease)
Diabetes that is poorly controlled
Putting off regular checkups and scaling for a long time even as tartar builds up

Do receded gums grow back?

First you need to distinguish true recession from swelling that has gone down. Teeth looking longer after scaling is the inflamed, swollen gum settling back into place, and the KDCA describes this as a natural change as the inflammation resolves.

Recession caused by gum disease that has even dissolved the gum bone is hard to return to its original state. Surgery to regenerate bone is possible only in very limited cases, and grafts that cover the exposed root with gum are also hard to guarantee. So the treatment goal is mostly to stop or slow progression and manage the sensitive symptoms.

What treatment is given when recession causes sensitivity?

If inflammation remains in the gums, tartar is removed by scaling, and if tartar lies deep below the gums, root planing, which smooths the root surface, is performed. Treatment of the sensitive area lasts longer once the inflammation has settled.

Sensitivity at an exposed root surface is first managed with fluoride or oxalate agents or adhesive coating, and if a groove has formed in the root, it may be filled with resin. If recession is severe in a visible spot such as the front teeth and the sensitivity is also great, a gum graft can be discussed, but the KDCA explains that its outcome is hard to predict.

How can you keep the gums from receding further?

Press the toothbrush lightly against the gums and start brushing from where the tooth meets the gum, using little force and short strokes. Gum disease usually starts between the teeth, so clean between the teeth with floss or interdental brushes at least once a day. If receded gums have widened the gaps between teeth, an interdental brush sized to the gap is especially useful.

After gum treatment, recurrence is easy, so have checks and scaling at 3 to 6 month intervals. Quitting smoking and controlling blood sugar are also important for slowing how fast the gums recede further.

Choose an interdental brush size that can clean both sides of the tooth well, do not force it in, and if the gums hurt, change to a size smaller. If the wire is bent or scratches the tooth root, replace it with a new one so that the exposed root surface is not damaged.

Common myths and facts

Myth: My gums receded because I had scaling

Teeth looking longer after scaling is the result of swollen gums settling down. What makes gums recede is not scaling but neglected tartar and gum disease.

Myth: If you keep taking oral gum medicine, receded gums grow back

The KDCA explains that taking medicine without removing tartar rarely works. Dissolved gum bone is not revived by medicine.

Myth: Gum recession is due to age and cannot be prevented

Age is one factor, but manageable causes such as gum disease, brushing habits and smoking play a large part. Reducing the causes can slow progression.

Frequently asked questions

Can I check by myself whether my gums have receded?

Recession may be suspected if the teeth look longer than before, a slightly different colored root surface is visible near the tooth neck, or the gaps between teeth have widened so that food often gets caught. How far the gums have actually receded is confirmed at the dentist through pocket depth and X-rays.

If I cover the receded area with resin, will the sensitivity go away?

If a groove has formed in the root surface, filling it with resin can reduce sensitivity. However, if gum disease keeps progressing, the gums recede further and new surfaces are exposed, so gum care must go along with it.

Can anyone have a gum graft?

Suitability differs depending on the condition of the gums and bone, the location of the recession, and whether you smoke. A gum graft is a treatment whose outcome is hard to predict, so decide after hearing the range you can expect and other options in full.

Does an electric toothbrush make gums recede more?

The pressure and the way you brush matter more than the type of brush. Any brush can increase wear and recession if pressed hard and scrubbed at the gum line, so brush lightly. With an electric toothbrush, slowly moving the brush from spot to spot, instead of scrubbing by hand motion, is easier on the gums.

Will I lose teeth if I have gum recession?

What matters is not the recession itself but how far the gum disease that causes it has progressed. If the gum bone has shrunk so much that teeth are loose, the risk is greater, but early treatment and regular care can slow progression.

References

Korean version →